(I’m working at a gas station in the early 90s. California has just recently eliminated leaded gas, so we have three grades of unleaded: regular, plus, and supreme. Even though it’s been MANY years now, I remember this customer like it was yesterday.)

Customer: “I need to get some unleaded gas, but I don’t want plus or supreme.”

Me: “Okay, so you want regular unleaded?”

Customer: “No, I don’t want regular. Regular has lead in it.”

Me: “No, sir, none of our gas has lead it in anymore. The State of California banned all lead in gas last year.”

Customer: “You aren’t making any sense. It can’t be regular and unleaded at the same time. I’m calling the state on you.”

(The customer then got into his car and drove off. A few days later, state inspectors were on site taking fuel samples to make sure we weren’t selling leaded fuel anymore, which we weren’t. I mentioned the customer to the state inspectors. One of them laughed and said they’d been getting a lot of calls like that one.)